The Rositsa (Bulgarian: Росица [roˈsit͡sɐ]) is a river in central northern Bulgaria, the most important tributary (a left one) of the Yantra.

[2] The river has its source in the Central Balkan Mountains between Shipka Pass to the east and Botev Peak to the west.

It flows north until Sevlievo, after which it gradually turns east-northeast until emptying into the Yantra.

An important tributary is the Vidima, which flows into the Rositsa at Sevlievo.

Other tributaries include the Negoychevitsa, the Kravenishka, the Byala and the Bagareshtitsa from the left, as well as the Malobuhalshtitsa, the Zelenikovets and the Marishtnitsa from the right.